/Engine/Plugins/Editor/SequencerAnimTools/Source/SequencerAnimTools/Public/TrailHierarchy.h
struct FTrailVisibilityManager
TSet<FGuid>
AlwaysVisible
TSet<FGuid>
ControlSelected
TSet<FGuid>
InactiveMask
TSet<FGuid>
Selected
TSet<FGuid>
VisibilityMask